GB1503092A - Process and apparatus for producing thermoplastic resin films having reduced thickness unevenness - Google Patents

Process and apparatus for producing thermoplastic resin films having reduced thickness unevenness

Info

Publication number
GB1503092A
GB1503092A GB12795/76A GB1279576A GB1503092A GB 1503092 A GB1503092 A GB 1503092A GB 12795/76 A GB12795/76 A GB 12795/76A GB 1279576 A GB1279576 A GB 1279576A GB 1503092 A GB1503092 A GB 1503092A
Authority
GB
United Kingdom
Prior art keywords
die
electrode
conductor
thermoplastic resin
reduced thickness
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB12795/76A
Other languages
English (en)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Teijin Ltd
Original Assignee
Teijin Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Teijin Ltd filed Critical Teijin Ltd
Publication of GB1503092A publication Critical patent/GB1503092A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/915—Cooling of flat articles, e.g. using specially adapted supporting means with means for improving the adhesion to the supporting means
    • B29C48/9165—Electrostatic pinning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/07—Flat, e.g. panels
    • B29C48/08—Flat, e.g. panels flexible, e.g. films
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
    • B29C48/86—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the nozzle zone
    • B29C48/865—Heating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/911—Cooling
    • B29C48/9135—Cooling of flat articles, e.g. using specially adapted supporting means
    • B29C48/914—Cooling of flat articles, e.g. using specially adapted supporting means cooling drums
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92609—Dimensions
    • B29C2948/92647—Thickness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92904—Die; Nozzle zone

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Treatments Of Macromolecular Shaped Articles (AREA)
  • Moulding By Coating Moulds (AREA)
GB12795/76A 1975-04-01 1976-03-30 Process and apparatus for producing thermoplastic resin films having reduced thickness unevenness Expired GB1503092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50038588A JPS5835131B2 (ja) 1975-04-01 1975-04-01 熱可塑性樹脂フイルムの製造装置

Publications (1)

Publication Number Publication Date
GB1503092A true GB1503092A (en) 1978-03-08

Family

ID=12529448

Family Applications (1)

Application Number Title Priority Date Filing Date
GB12795/76A Expired GB1503092A (en) 1975-04-01 1976-03-30 Process and apparatus for producing thermoplastic resin films having reduced thickness unevenness

Country Status (7)

Country Link
US (1) US4129630A (de)
JP (1) JPS5835131B2 (de)
CA (1) CA1062426A (de)
DE (1) DE2613094A1 (de)
FR (1) FR2306064A1 (de)
GB (1) GB1503092A (de)
NL (1) NL169283C (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4332543A (en) * 1980-09-15 1982-06-01 Monsanto Company Extrusion die with melt flow control
US4668463A (en) * 1982-07-21 1987-05-26 Clopay Corporation Method of making linear low density polyethylene film
JPH0272923A (ja) * 1988-09-08 1990-03-13 Fuji Photo Film Co Ltd 熱可塑性重合体フィルムの製造方法
US5494619A (en) 1994-10-18 1996-02-27 Eastman Kodak Company Improved electrostatic pinning method
US5674440A (en) * 1995-05-05 1997-10-07 Graham Engineering Corporation Die head with adjustable mandrel and method
DE102006012297A1 (de) * 2006-03-15 2007-09-20 Breyer Gmbh Maschinenfabrik Verfahren zum Betreiben von Extrusionsanlagen zum Extrudieren von thermoplastischen Kunststoffen

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA935119A (en) * 1969-05-12 1973-10-09 E. Hawkins William Electrostatic pinning of polymeric film
US3686374A (en) * 1970-03-23 1972-08-22 Du Pont Gas assisted electrostatic pinning
US3660549A (en) * 1970-03-23 1972-05-02 Du Pont Electrostatic pinning of dielectric film
US3655307A (en) * 1970-03-23 1972-04-11 Du Pont Electrostatic pinning of dielectric film
BE792198A (fr) * 1971-12-02 1973-06-01 Du Pont Epinglage electrostatique de pellicules de polymere
US3795474A (en) * 1972-03-08 1974-03-05 Du Pont Molten thermoplastic web quenching apparatus
US3904725A (en) * 1972-03-08 1975-09-09 Du Pont Quenching molten thermoplastic film
US3779682A (en) * 1972-03-08 1973-12-18 Du Pont Quenching molten thermoplastic film
US3819775A (en) * 1972-08-15 1974-06-25 R Mules Method of making polymeric film
US3820929A (en) * 1972-12-14 1974-06-28 Celanese Corp Electrostatic pinning of polymeric film

Also Published As

Publication number Publication date
US4129630A (en) 1978-12-12
CA1062426A (en) 1979-09-18
JPS5835131B2 (ja) 1983-08-01
FR2306064B1 (de) 1978-11-17
FR2306064A1 (fr) 1976-10-29
NL7603402A (nl) 1976-10-05
NL169283C (nl) 1982-07-01
DE2613094A1 (de) 1976-10-14
NL169283B (nl) 1982-02-01
JPS51114466A (en) 1976-10-08

Similar Documents

Publication Publication Date Title
US3702258A (en) Web treatment method
US3308045A (en) Process and apparatus for treating plastics
ES477132A1 (es) Procedimiento y dispositivo para el enchapado de una pelicu-la dielectrica sobre una superficie movil electricamente conductora.
GB1503092A (en) Process and apparatus for producing thermoplastic resin films having reduced thickness unevenness
EP0386796B1 (de) Verfahren zum Aufbringen unipolarer elektrostatischer Ladungen auf eine kontinuierlich bewegte lange Unterlage und Apparat zu dessen Ausführung
GB1194486A (en) Improvements in the Production and Handling of Film
ES339294A1 (es) Procedimiento y aparato para el tratamiento de peliculas o-rientadas de un material polimero cristalino.
US3739246A (en) Process and apparatus for increasing the charge density of insulators
GB1434863A (en) Corona generating apparatus
US3757163A (en) Web treatment apparatus and methods
GB1025199A (en) Improvements in or relating to xerographic transfer platen
GB1062820A (en) Method and apparatus for controlling coating thickness
IE32976B1 (en) Electrostatic charging device and process
GB1108067A (en) Process for recording information
GB1446596A (en) Casting of polymeric film
GB1312519A (en) High-speed casting of thermoplastic web
GB1029065A (en) Improvements in or relating to electrostatic recording
JPS5635405A (en) Method and apparatus for charging electret thin film
GB1361463A (en) Manufacture of sheet materials
GB1080233A (en) Surface treatment of sheet materials and articles
GB1504038A (en) Apparatus for photoelectrophoretic imaging
JPS57105758A (en) Direct recording method
ES446115A1 (es) Aparato para alisar y contraer chapa abollada.
ES473608A1 (es) Procedimiento de revestimiento de una superficie por proye- ccion de particulas de una materia plastica dielectrica en estado liquido bajo el efecto de un campo electrostatico.
GB885090A (en) Method of improving the affinity to printing inks of articles formed from high molecular weight propylene polymers

Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19960329